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/*
* Copyright (C) 2019 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <errno.h>
#include <spawn.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <android-base/file.h>
#include <android-base/stringprintf.h>
#include <benchmark/benchmark.h>
static std::string test_program(const char* name) {
#if defined(__LP64__)
return android::base::GetExecutableDirectory() + "/" + name + "64";
#else
return android::base::GetExecutableDirectory() + "/" + name + "32";
#endif
}
extern char** environ;
static void BM_spawn_test(benchmark::State& state, const char* const* argv) {
for (auto _ : state) {
pid_t child = 0;
if (int spawn_err = posix_spawn(&child, argv[0], nullptr, nullptr, const_cast<char**>(argv),
environ)) {
state.SkipWithError(android::base::StringPrintf(
"posix_spawn of %s failed: %s", argv[0], strerror(spawn_err)).c_str());
break;
}
int wstatus = 0;
const pid_t wait_result = TEMP_FAILURE_RETRY(waitpid(child, &wstatus, 0));
if (wait_result != child) {
state.SkipWithError(android::base::StringPrintf(
"waitpid on pid %d for %s failed: %s",
static_cast<int>(child), argv[0], strerror(errno)).c_str());
break;
}
if (WIFEXITED(wstatus) && WEXITSTATUS(wstatus) == 127) {
state.SkipWithError(android::base::StringPrintf("could not exec %s", argv[0]).c_str());
break;
}
}
}
#define SPAWN_BENCHMARK(name, ...) \
BENCHMARK_CAPTURE(BM_spawn_test, name, (const char*[]) { __VA_ARGS__, nullptr }) \
->UseRealTime() \
->Unit(benchmark::kMicrosecond) \
SPAWN_BENCHMARK(noop, test_program("bench_noop").c_str());
SPAWN_BENCHMARK(noop_nostl, test_program("bench_noop_nostl").c_str());
SPAWN_BENCHMARK(noop_static, test_program("bench_noop_static").c_str());
// Android has a /bin -> /system/bin symlink, but use /system/bin explicitly so we can more easily
// compare Bionic-vs-glibc on a Linux desktop machine.
#if defined(__GLIBC__)
SPAWN_BENCHMARK(bin_true, "/bin/true");
SPAWN_BENCHMARK(sh_true, "/bin/sh", "-c", "true");
#elif defined(__ANDROID__)
SPAWN_BENCHMARK(system_bin_true, "/system/bin/true");
SPAWN_BENCHMARK(vendor_bin_true, "/vendor/bin/true");
SPAWN_BENCHMARK(system_sh_true, "/system/bin/sh", "-c", "true");
SPAWN_BENCHMARK(vendor_sh_true, "/vendor/bin/sh", "-c", "true");
#endif
BENCHMARK_MAIN();
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